It's mainly about two different armies battling each other out with their mecha.
1 Volume (Complete)






i lost my patience after the 1st chapter...bleh...it's not worth your time...plus all the pretentious jargon put me off...had a hard time remembering anything that was taking places with the weird names and terminologies...bad
it was an interesting idea though...a manga in colour with cgi mecha in it...too bad it was so crap
I'm a tremendous Mohiro Kitoh fanboy, and I must say that after hunting after a translation of it for years, SiNNa 1905 is a major letdown. The characters are uninteresting, the plot is dull, and, as Takitogr stated below, it's burdened down by tons of obnoxious fictional technobabble. It basically comes down to a play by play in a small skirmish involving crude mechs, and lots of people shouting to reroute power to the "escariules," apparently the cool new name for "wheels." Even the art is disappointing, with plenty of very obvious low quality CGI and extremely amateurish photoshop coloring the likes of which I would expect from deviant art, not professionally produced manga. Even if you're an intense Kitoh completist, I'd say skip this one. It's only going to denigrate your impression of the man.